A nut having one convex, spherical bearing surface and 6 flat sides. Items may have a removable collar. An integral feature is incorporated for locking on the threads of a mating member. See also nut (1), self-locking, cone seat, hexagon.
Classification: Nuts of iron or steel
NSN 6620-01-621-0719
NSN 4140-00-471-1464
NSN 5905-00-128-8167
NSN 2925-01-554-1474
NSN 6135-01-281-4758
NSN 5999-01-092-1426
NSN 5985-01-012-0948
NSN 6320-01-233-5798
NSN 5960-01-174-3119
NSN 4140-01-543-5937
NSN 5920-00-970-4818
NSN 6220-01-075-6547